Die casting machine



May 23, 1933.

W. J. FIEGEL ET AL DIE CASTING MACHINE Filed May 28, 1930 5 Sheets-Sheet 1 a F. NH mg m ,0 WM. Mm m1.

May 23, 1933. w. J. FIEGEL ET AL DIE CASTING MACHINE Filed May 28, 1950 5 Sheets-Sheet 2 I, ric M ATTORNEY May 23, 1933. w. J. FIEGEL ET AL DIE CASTING MACHINE 5 Sheets-Sheet 3 INVENTOR Filed May 28, 1930 ATTORNEYS I WXD W y 23, 3- w. .1. FIEGEL. ET AL mmzm DIE CASTING MACHINE Filed May 28, '1930 5 Sheets-Sheet 4 ATTORN EYS.

May 23, 1933.

w. J. FIEGEL ET AL DIE CASTING MACHINE Filed May 28, 1950 5 Sheets-Sheet 5 ATTORNEY Patented May 23, 1933 UNITED STATES PATENT OFFICE WILLIAM J. FIEGEL AND WDVFIELD S. ENDERICH, OF DETROIT, MICHIGAN, ASSIGNORS 'I'O BOHN ALUMINUM & BRASS CORPORATION, OF DETROIT, MICHIGAN, A CORPO- RATION OF MICHIGAN Application filed May 28,

This invention relates generally to die casting machines.

One of the essential objects of the invention is to provide a machine of this type in which mold sections are adapted to be clamped so tightly together that leakage of molten metal therefrom is obviated.

Another object is to provide a machine in which the means for supplying molten metal to the mold is adapted to be moved into operative metal discharging position relative to the mold at the time the sections of the latter are clamped together so that both the mold and the supply means are in readiness at the same time for the transfer of molten metal.

Another object is to providea machine in which the clamping of the mold sections and the movement of the supply means to operative position are effected by a common actuating means.

Another object is to provide means for automatically returning the supply means to inoperative position when the mold sections are separated.

Other objects, advantages, and novel details of construction of this invention will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawings wherem:

Figure 1 is a fragmentary side elevation of a machine embodying our invention and showing the mold sections spaced apart;

Figure 2 is a view similar to Figure 1 but showing the mold sections together preliminary to being clamped;

Figure 3 is a view similar to Figures 1 and 2 but showing the mold sections clamped together and the means for supplying molten metal to the mold in operative discharging position relative to the mold;

Figure 4 is a top plan view of the construction illustrated in Figure 3;

Figure 5 is a sectional view taken on the line 55 of Figure 4;

Figure 6 is a sectional view taken on the line 66 of Figure 5;

looking from the left hand end of Figure 1; Figure 8 is an end elevation of the machine DIE onsrm'e mcnmn 1980. Serial No. 456,709.

without the hydraulic pump looking from the right hand end of Figure 1;

Figure 9 is a horizontal sectional view taken on the line 9-9 of Figure 1;

Figure 10 is a sectional view taken on the line 10-10 of Figure 7;

Figure 11 is a sectional elevational view through the melting pot supporting means and showing the melting pot and associated parts in elevation taken substantially on the plane indicated by line 1111 of Figure 7 Figure 12 is a sectional view taken on the line 1212 of Figure 11;

Figure 13 is a diagrammatic view of the machine.

Referring now to the drawings, 1 is the base of the machine; 2 and 3 respectively are parallel vertical Walls rising from the base at one end thereof and having horizontal ledges 4 and 5 respectively, and 6 and 7 respectively are parallel walls rising from the base 1 at the opposite end thereof and having horizontal ledges 8 and 9 respectively. 10 is a transversely extending frame bolted upon the upper ends of the walls 2 and 3; 11 is a vertical frame supported upon wheels 12 and movable longitudinally of the ledges 8 and 9; and 13 are parallel horizontal rods extendingthrough the frames 10 and 11. As shown, these rods 13 are slidable in the frame 10 and are adjustably connected to the frame 11. 14 is a vertical frame slidably mounted upon the bars-13 between the frames 10 and 11, and 15 and 16 respectively are cooperating sections of the mold bolted to the frames 10 and 14. 17 is a vertical frame secured upon the rods 13 at one end thereof and having supporting wheels 18 movable longitudinally of the ledges 4 and 5, and 19 are coil springs sleeved upon the rods 13 between the vertical frames 10 and 17 and'normally maintaining the latter at the rear ends of the ledges 4 and 5. 20 are spaced brackets projecting rearwardly from the ends of the walls 2 and3; 21 are wheels or rollers carried by said brackets;

22 is a fire box secured to the frame 17 and mounted on the the rollers 21; 23 is. a melting Figure 7 is an end elevation of the machine tudinally movable wedges slidably mounted upon the top frame 25 of the box and constltuting seats for the rim 24 of the pot; and

'27 are adjusting screws or bolts for the wedges 26 threadedly engaging the top frame 25 of the box. 28 is a vertical cylinder rising from the bottom of the pot 23 and provided adjacent its upper ends with inlet ports 29 for molten metal; 30 is a passage extending upwardly in a side wall of the pot from the lower end of the cylinder 28 to a point adjacent the upper edge of thepot; and 31 is a laterally projecting nozzle rigid with the pot 23 and having an IL passage 32 therein registering with the passage 30 and adapted to register with the horizontal passage 33 in the frame 10 to which the mold section 15 is secured.' 34 is a pistonwithin the cylinder 28; 35 is an air cylinder supported by uprights 36 upon the frame 17;37 is apiston within the cylinder 35; 38 is a piston rod terminally connected tothe pistons 34 and 37; 39 is a compressed air conduit leading from a suitable source (not shown); 40 is an air gage connected to the conduit 39; 41 is an air valve; 42 is an operating handle for the valve; 43 is a conduit connecting the valve 41 with the conduit 39; and 44 and 45 respectively are air conduits leading from the valve 41to the cylinder 35 above and below the piston 37.

In the present instance the'mold sections 15 and 16 are adapted to'be clamped tightly together and the nozzle 31, melting pot 23 and fire box 22 are adapted to be moved as a unit by a common actuating means toward the frame 10 so that the passage 32 in the nozzle will register with the passage 33 constituting the inlet for the mold section 15. As shown, 46 are rollers or wheels movable longitudinally of slots or guideways 47 in the upright walls 6 and 7; 48 is a shaft extending between the rollers 46; 49 is a vertical inverted U-shape frame or saddle upon the shaft 48; 49 and 50 respectively are levers or links pivoted upon the shaft 48 and successively engageable with a shelf 51 and a ledge or abutment 52 of thevertical frame 11; 48 is a spacer on the shaft 48 between the levers 49 and 50; 53 is a cross bar or plate extending between and bolted to the levers 49 and 50; 54 and 55 respectively are vertically spaced shafts in the U-shaped frame 49'; 56 is a lever upon the shaft 54 andengageable with the plate 53 to raise the levers 49 and v50 from the ledge 52 to the shelf 51; 57 is a sleeve on the shaft 55; 58 are toggle links terminally connected to the frame 14 and to the lever 56; 59 are toggle links terminally connected to the frame 14 and to the sleeve 57 60 are links terminally connected to the intermediate pivots 61 and 62 respectively of the toggle links 58 and 59 ;63 is a transversely extending bar extending between and integral with the links 58' of the toggle links 58; 64

is a Y-shaped member or yoke having the lel links bolted to the yoke 64 and extending downwardly therefrom; 71 is a pin terminal,- ly connected to the link 69 and 7 O at the lower ends thereof; 72 is a slide having a vertical slot 73 receiving the pin 71; 74 and 75 respectively are horizontal guides for the slide 72; and 7 6 and 77 respectively are supports for the slides 74 and 75. 7 8is a cylinder on the base 1 between the walls 2 and 3; 79 is a piston within the cylinder 78; 80 is a piston rod terminally connected to the piston 79 and to the slide 72; 81 is a'hydraulic pump; 82 and 83 respectively are conduits extending between-the pump 81 and cylinder 7 8; 84 is a valve in the hydraulic pump controlling the flow of fluid between the conduits 82 and 83; 85 is a reciprocating actuating rod for the valve 84; 86 and 87 respectively are collars rigidly secured to the rod 85 at spaced points thereof; 88 is an arm projecting laterally from the slide 72 and engageable with the collars 86 and 87 89 is an operating lever; and 90 and 91 respectively are links connecting the operating lever 89 to the rod 85.

In use, suitable dies (not shown) may be placed within the mold sections 15 and 16 while the latter are spaced. apart, as illustrated in Figure 1. The lever 89 may then be permit the passage of fluid from the hydraulic pump 81 through the conduit 82 to the cylinder 78. This causes the piston 79, rod 80 and slide 72 to move as a unit to the left. The link 69, yoke 64, frames 46 and 14 will thus be moved-bodily to the left on the rods 13 to the position illustrated in Figure 2. In this position the levers 49, 50 and 56 have been removed from the shelf 51. The levers 49 and 50 are now in engagement with the ledge 52 of the frame 11 and the lever 56 is between said levers 49 and 50 in spaced relation to the ledge 52. Continued move ment of the piston 79 to the left causes the yoke 64 to swing past dead center to the position illustrated in Figure 3, whereupon the arm 88 projecting from the slide 72 will abut the collar 86 and actuate the rod 85 to close the valve 84in the hydraulic pump. Since the yoke arms 65 and 66 are integral with the transverse bar 63 and lever 56, it will be apparent that when the piston 79 moves to the left from the position illustrated in Figure 2 to the position illustrated in Figure 3, the toggle links 58 and 59' will be moved from the broken position to the straight line position, and the lever 56 will be lowered. as shown in Figure-3. As the toggle links 58 and 59 move from the broken to the straight line position the frame 14 is pressed thereby toward the frame 10 so that the mold section 16 is clamped tightly against the mold section 15 and the engagement of the levers 49 and 50 with the ledge 52 of the frame 11 causes the frame 11 and rods 13, frame 17 and fire box 22 to be moved to the right so that the nozzle 31 abuts the frame 10. If for any reason the passage 32 is not in proper alignment with the passage 33, the adjusting screw 27 may be rotated to move the wedge 26 longitudinally as desired to tilt the melting pot 23 to the proper angle relative to the upright wall 10. When the parts'are in this position the operating handle 42 may be operated to open the valve 41 so that air from the conduit 39 will flow into the cylinder 35 above the piston 37 to cause the latter to move downwardly.

This causes the rod 38 to press the piston 34 downwardly in the cylinder 28 so that molten metal received in the cylinder through the inlets 29 will be forced through the passages 30, 32 and 33 into the dies within the mold.

The operating handle 42 may then be operated in the opposite direction to cause the valve 41 to close the passage 44 and open the passage 45 so that air from the conduit 39 will enter the cylinder 35 beneath the piston 37 to raise the latter. 'ThiS causes the rod 38 and piston 34 to be raised. The operating lever 89 may then be actuated to open the valve 84 so that fluid from the hydraulic pump 81 will fiow through the passage 83 to the cylinder 78 to cause the piston 79 to move to the right. This will cause the yoke 64 to break the toggle links and engage the plate 53 so that the levers 49 and 50 will be raised above the shelf 51. Continued movement of the piston 79 to the right causes the slide 72, yoke 64, levers 49, 50 and 56, frames 46 and 14 to move to the right so that the levers 49, 50 and 56 will move upon the shelf 51 and the mold section 16 will be separated from the section 15 so that the work can be removed from the mold. When the toggle links aforesaid are broken the spring 19 will automatically return the frame 17, fire box 22 and melting pct 23 to the left so that the nozzle 31 will be spaced from the frame 10. Thus the parts will be returned to the position illustrated in Figure 1. When the parts are in this position the arm 88 carried by the slide 72 abuts the collar 87 on the rod 85 and causes the latter to close the valve 84 in the hydraulic pump 81.

What we claim as our invention is:

- 1. In a machine of the class described, a fixed mold section, a plurality of rods slidably supported on said fixed mold section, a saddle slidable on said rods, a movable mold section slidable on said rods between said saddle and said fixed mold section, an abutment for said saddle fixed to said rods, toggle linkage between said saddle and said movable mold section so arranged that straightening of said toggle linkage clamps said movable mold section against said fixed mold section and causes said saddle to move said abutment away from said fixed mold section, and metal charging means fixed to said rods for movement with the same into cooperative relation with respect to said fixed mold section.

2; In a machine of the class described, a fixed mold section, a plurality of rods slidably supported on said fixed mold section, a saddle slidable on said rods, a movable mold section slidable on said rods between said saddle and said fixed mold section, an abut ment for said saddle fixed to said rods, toggle linkage between said saddle and said movable mold section so arranged that straightening of said toggle linkage clamps said movable mold section against said fixed mold section and causes said saddle to move said abutment away from said fixed mold section, resilient means opposing movement of said abutment by said saddle, and metal charging means fixed to said rods formovement with the same into cooperative relation with respect to said fixed mold section.

3. In a machine of the class described, a fixed mold section, a plurality of rods slidably supported on said fixed mold section, a saddle slidable on said rods, a movable mold section slidable on said rods between said saddle and said fixed mold section, an abutment forsaid saddle fixed to said rods, a link pivoted to said saddle for engagement with the said abutment, toggle linkage between said saddle and said movable mold section so arranged that straightening of said toggle linkage clamps said movable mold section against said fixed mold section and causes said link when engaged with the abutment to move the abutment away from said fixed mold section, metal charging means fixed to said rods for movement with the same into cooperative relation with respect to said fixed mold section, means for actuating said toggle link age, and means actuated by said last mentioned means for moving said link into and out of engagement with said abutment.

4. In a machine of the class described, a fixed mold support, a mold section carried by said support, a plurality of rods slidably supported on said fixed mold support, a saddle slidable on said rods, a movable mold section slidable on said rods between said saddle and said fixed mold section, an abutment for said saddle fixed to said rods,'toggle linkage between said saddle and said movsaid fixed mold support and said metal charging means for opposing movement of said abutment by said saddle.

5. In a machine of the class described, a fixed mold section, a plurality of rods slidably supported on said fixed mold section, a saddle slidable .on said rods, a movable mold section slidable on said rods between .said saddle and said fixed mold section, an

abutment for said saddle fixed to said rods, toggle. linkage between said saddle and said movable mold section so arranged that straighteningof said toggle linkage clamps said movable mold section against said fixed mold section and causes said saddle to move said abutment away from said fixed mold section, means for moving said saddle, movable mold section and toggle linkage longitudinally of said rods to position said movable-mold section adjacent said fixed mold section and to bring said saddle into cooperative relation with respect to said abutment, said means being thereafter operable to straighten said toggle linkage, and metal charging means fixed to said rods for movement with the same into cooperative relation with respect to said fixed mold section.

6. In a machine of the class described, a mold, a melting pot, an enclosure for the melting pot, a nozzle carried by the melting pot and adapted to discharge molten metal into the mold, and adjustable Wedge means between the enclosure and the melting pot for tilting the latter relative tothe former to position the nozzle in proper discharge position'relative to the mold.

In testimony whereof we afiix our signatures.

WILLIAMJ. FIEGEL. v WINFIELD S. ENDERICH. 

